Gomes, 30, has a .211/.336/.399 line with 11 homers in 265 plate appearances this season. He entered the season with a reputation for hitting southpaws (.281/.376/.510 career line against lefties) and has continued hitting them in 2011 (.333/.439/.537 line). However, the left fielder has seen his playing time decrease this month – he has only batted 31 times in July.

Gomes earns $1.75MM this year and will hit free agency after the season. Since he currently projects as a Type B free agent, the Nationals could obtain a supplementary draft pick for him by offering arbitration. However, there's no guarantee that Gomes, a two-time non-tender, will receive an arbitration offer.

Manno was a 26th round pick for Washington in last year's draft. He has a 1.47 ERA with 14.4 K/9 and 3.7 BB/9 in 61 1/3 innings as a professional. The 22-year-old, who has yet to pitch above Class A, has worked exclusively in relief.

Rhinehart, 26, is in his fifth season as a professional. He has a .283/.376/.587 line with 21 homers at Double-A, a level he first appeared at in 2008. Rhinehart, who reached Triple-A last year, has a .261/.331/.458 line in his pro career.